bug修复

unify_api/modules/home_page/dao/count_info_dao.py

@@ -152,7 +152,8 @@ async def compy_lst_month_pf(cid):
             return ""
         
         now_dt = pendulum.now(tz=CST)
-        cal_month = now_dt.subtract(months=1).format("YYYY-MM-DD")
+        cal_month = now_dt.subtract(months=1).start_of(unit="month").format(
+            "YYYY-MM-DD")
         sql = "SELECT cos FROM algo_power_factor_result " \
               "WHERE inlid in %s and month=%s"
         cos_lst = [r["cos"] for r in